Glimmer Index
Plus $4/mo

Grok 4

xAI · Released Jul 9, 2025
Since the last one
330 days
after Grok-2 Beta
Lab announcement ↗Open in the timeline

Since Grok-2 Beta

11 releases in the Grok 4.7 line.

Grok-1Mar 17, 202411dGrok-1.5Mar 28, 2024138dGrok-2 BetaAug 13, 2024330dGrok 4Jul 9, 2025131dGrok 4.1Nov 17, 2025112dGrok 4.20 (Non-Reasoning)Mar 9, 20260dGrok 4.20 (Reasoning)Mar 9, 2026
Released330 days later

A newer release is out: Grok 4.7.

Epoch benchmark boards

Best result on each board it has run. The tick marks the leader.

Fiction.LiveBench
94%#3 of 58
Cybench
43%#5 of 22
Balrog
44%#9 of 39
GPQA diamond
87%#65 of 234
SimpleBench
60%#28 of 89
METR Time Horizons
67%#14 of 42
OTIS Mock AIME 2024-2025
84%#84 of 216
DeepResearch Bench
47%#12 of 26
6 more boards
ARC-AGI
67%#50 of 107
WeirdML
46%#66 of 141
ARC-AGI-2
16%#50 of 103
Terminal Bench
27%#40 of 50
GeoBench
45%#25 of 28
GDPval
21%#10 of 11

xAI's past year

19 release days in the past year, about one every 19 days. The next is expected around Nov 10, 2026. Forecasts ↗

NovDecJanFebMarAprMayJunJulAugSepOctNov

This release is tracked directly from its lab. Open the announcement for access and availability.